
from .frame import Passer, Timer


class Stater:
    def reg_event(self, frame):
        pass
        #raise NotImplementedError()
    

class EnvReply:
    def __init__(self, stater):
        assert isinstance(stater, Stater)
        self.stater = stater
        
    
    def reg_event(self, frame):
        self.stater.reg_event(frame)
        pass

                    
            
